Skip to contentGo to Product Search
Main Content

Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White

Model: HX3921/40
SKU: 6483389
Sold byBest Buy

Customers are saying

Customers praise the Power Flosser & Toothbrush System 7000, HX3921 for its multiple cleaning modes and intensity levels, long battery life, ease of use, and overall design. The water pressure is adequate for most, and the SoniCare app is comparable to the Oral-B app. However, some customers have expressed concern over the fact that only one brush head is provided with the system.

Generated by AI based on customer reviews.
Features
  • More Effective Than Floss

    Up to 270% more effective than manual toothbrush and floss for healthier gums.

Specifications
  • Number of Tips Included
    3
    Reservoir Capacity
    20.28 ounces
Sponsored

Reviews

Rating 4.5 out of 5 stars with 52 reviews

88% would recommend to a friend
Customers are sayingCustomers praise the Power Flosser & Toothbrush System 7000, HX3921 for its multiple cleaning modes and intensity levels, long battery life, ease of use, and overall design. The water pressure is adequate for most, and the SoniCare app is comparable to the Oral-B app. However, some customers have expressed concern over the fact that only one brush head is provided with the system.
This summary was generated by AI based on customer reviews.
  • Cleaning (12)
  • Water Pressure (8)
  • Battery Life (5)
  • Ease of use (5)
  • Intensity (5)
  • Brush Head (6)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Much stronger than previous versions

    Seems to be a much better product than previous ones

    Posted by JEFFA

  • Rated 4 out of 5 stars

    Great water flosser for a sonicare owner

    Loving the water flosser and the sonicare toothbrush, the toothbrush was a replacement as we only use sonicare toothbrushes. The water flosser works great overall, compact foot print works well for our space and the reservoir is sufficient for a full mouth cleaning. The heads quickly click in and out for multiple people in a household to use.

    Posted by MatthewP

  • Rated 4 out of 5 stars

    Cleaner teeth and gums system

    I’ve used other electric toothbrushes over the years mostly from the other prominent brand. Getting this latest Philips Sonicare Power Flosser & Toothbrush System 7000 almost feels like getting my teeth and gums cleaned by a dental hygienist every day. I don’t know how it does it, but my teeth and gums feel so clean and fresh after each brushing plus flossing session that I’m never going back to using a regular manual toothbrush. The smooth sonic vibrations of the brush head almost create a feeling of gentle water pressure/swishing in your mouth, resulting in a very refreshing feeling. Make sure you close your mouth as much as possible, or you’ll be making a bit of a mess on your mirror. The setup and use is very simple and straightforward. There are 3 modes of operation intensity: Clean, Deep Clean and Gum Health. The brush head it came with is the new C3 style that is coated with a soft silicone edge on the outside, opposite to the bristles. The charger base is a bit bulky with the water tank and power flosser but the travel case with separate travel charger is a welcome addition. Compared to other brands I’ve used that consider your mouth to have 4 quadrants, with 30-second brushing of each section, this Sonicare divides your mouth in 6 quadrants with 20-second brushing intervals. That was confusing at first, but the manual is pretty clear about it. First time using a water flosser, so I didn’t know what to expect, other than be very careful and keep your mouth closed as much as possible or else you’ll splash everything like a kid with a water gun at a pool party. It will take lots of practice to get it just right, but I have a few months before my next dentist visit, so I’m hoping it will make a difference as I do have sensitive gums that bleed a lot if I don’t floss daily. The power flosser has 4 different modes and 10 intensity settings, so if you’re patient and persistent you’ll find the setting that works for you. The App installed on my Android phone and worked on the first try. I don’t usually bring my phone to the bathroom while brushing my teeth, but I do like usage information and statistics and reminders when to change the brush head. I wish they included more than just 1 brush head, as they could be pricey. I also wish there was a visual indicator, like a red light when you’re pushing the brush head too hard against your teeth/gums. Other than that, this is a very nice and comprehensive teeth and gum cleaning system.

    Posted by SUHD

  • Rated 5 out of 5 stars

    Winning Combination

    The Phillips Sonicare Power Flosser System is a perfect combination of a water flosser and a Sonicare electric toothbrush. I have used Sonicares for years and always have preferred them over other electric toothbrushes. Though I did own another brand water flosser in the past, I didn’t care for the loud noise or the operation (once on you had to hold the button on handle to not spray water). Phillips has improved on all of the shortcomings and includes a convenient charging base for the included Sonicare toothbrush. First thing I noticed was how you can turn it on and select your operation mode (clean, deep clean, sensitive, or massage) without shooting water everywhere. The flosser handle magnetically attaches to the base and the cord neatly coils into the unit when not in use. Operation is very quiet, yet powerful and easily adjustable on the fly. It was simple to find a setting that worked well while accommodating my sensitive gums. While they include 3 nozzles to customize the flosser, I found the Quad Stream to provide the best performance. The pulse wave feature ramps the flosser pressure up and down chronically to help guide you from tooth to tooth, though I found myself staying in some hard to clean areas for multiple “cycles”. I am not sure it will completely eliminate the need to floss periodically with traditional filament, but it does a pretty good job and is far more convenient and easier on my gums. The included Sonicare is a really nice toothbrush with all of the features you would expect. The toothbrush offers 3 cleaning modes and 3 power levels which offer a customizable cleaning experience. Operation was the familiar 30 second quadrant cleaning I was accustom to but it may be slightly quieter and stronger than my old handle. Though only 1 brush head is provided, Phillips does include a travel case and an extra charger that is separate from the power flosser base. Overall it is a really nice kit that provides everything you would need to improve and maintain your oral health.

    Posted by PeboQuattro

  • Rated 4 out of 5 stars

    Interesting Approach to Oral Hygiene

    INTRODUCTION The Philips SoniCare toothbrush combines regular brushing with “sonic” vibrations to help remove food and plaque. If not enough, the kit includes a powered flosser with its own pump to help blast any stubborn remnants from between your teeth, making for healthier gums and hopefully less time in the dentist’s chair. USE Initial use for this kit is quite simple. Place the toothbrush on the charger, fill the reservoir with water and dig out all the brush heads and flossing wands and put them all in their proper containers. After the toothbrush charged for approximately 3 hours, it was ready for use. Philips has joined the bandwagon on packing more and more tech into something that I thought never really needed it. Their new line of toothbrushes and gum care products are all Bluetooth enabled. A download from the Google Play Store or Apple App Store gets the SoniCare app and with an account creation, links your toothbrush to the phone. The SoniCare app is much like the Oral-B app. It offers you a way to keep track of your toothbrush (and update its firmware), coaches you on your brushing, including time and pressure applied, days left until the head needs replaced, and even allows you to input appointments for the dentist. While I’m not sure of the overall necessity for an app for a toothbrush (something I also questioned with the Oral-B), the SoniCare app did work without issue on both my Android and iOS devices. Good work Philips! Those of us that have used Oral-B products for years will find the SoniCare experience quite unique. The way the brush operates to clean your teeth is much different than the Oral-B. The combinations of movement and pulses feels awkward at first and does take some time to feel “normal”. The powered water flosser is a different story. I have some time still ahead of me to master that. The first few times I used it, I wound up laughing more than actual flossing. The pump on the water flosser is quite powerful. Powerful enough to shoot water across the bathroom for several feet. Ask me how I know. You have to make sure you have that flosser in the correct position before using the trigger or yourself, the vanity, and bathroom will all get a good bath. It was humorous the first few times, aggravating the next few times. I’m sure once I get better at it, it will be less messy, but you gotta be on your A-Game when you first give it a go. NEGATIVES The only real issue that I can think of is that water flossing can be very messy and you can only go a few seconds before your mouth fills up and you need to spit it all out. I have attempted to use the flosser with my mouth open, but I either need more practice, or it can’t be done as water was shooting around the bathroom like someone unleashed Old Faithful. CONCLUSIONS The SoniCare toothbrush and water flosser do seem to do a very good job at cleaning your teeth. My teeth did feel much cleaner flossing after a meal. That is, when I wasn’t spraying water across the bathroom. I have to admit though, the inner child in me found it to be an awesome, secret squirt gun. Not that I would participate in such juvenile behavior. How well it will performs compared to my existing Oral-B toothbrush in the long run is yet to be seen. But, my initial few uses with the SoniCare have been impressive and positive and I feel the powered flosser does make a tangible difference in how my teeth and gums feel. Recommended.

    Posted by NAMO

Compare similar products

Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
4.5(52)

Discover the power of X! The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Stream technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!

Waterpik - Sonic-Fusion 2.0 Flossing Electric Toothbrush with Water Flosser Combo In One, ADA Accepted - White
5.0(1)

The Waterpik Sonic-Fusion 2.0 Professional (SF-04) flossing toothbrush is a compact, convenient, all-in-one brushing and flossing solution that lets you simplify your oral care routine. Brush, water floss, or both with the touch of a button. Flossing technology is built into the patented brush head: the sonic electric toothbrush cleans the surfaces of your teeth while the water flosser in the center of the brush head cleans deep between teeth and below the gumline. Sonic-Fusion 2.0 Professional features high and low brush settings, quiet operation, and LED mode indicator lights for ease of use. Removes up to 99.9% of plaque bacteria from treated areas that causes gingivitis, bleeding gums, cavities, and bad breath. Waterpik is the #1 water flosser brand recommended by dental professionals, and the Waterpik Sonic-Fusion 2.0 Professional is accepted by the American Dental Association (ADA) for safety and effectiveness.

Philips Sonicare - Power Flosser 3000 - White

The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Steam technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!

Waterpik - Sensonic Complete Care, Water Flosser and Sonic Electric Toothbrush Combo, ADA Accepted - White
5.0(1)

Take control of your oral care with the Waterpik Sensonic Complete Care water flosser + electric toothbrush. With advanced features and an intuitive design, this innovative oral care system provides exceptional results, in a compact device that uses just one outlet. Designed to help provide maximum plaque removal and optimal gum health, Waterpik Sensonic Complete Care is ideal for anyone looking for a custom flossing and brushing solution. The advanced Waterpik water flosser features 10 safe and effective pressure settings and a variety of specialty tips for specific dental needs, including maintaining implants, braces, and dental work. The rechargeable Sensonic electric toothbrush offers 3 brushing modes to personalize your experience: Clean, Stain Removal, and Gum Care. The Clean mode offers everyday cleaning performance, while the Stain Removal mode targets surface stains. The Gum Care mode gently enhances gum stimulation for a healthier smile. The advanced Sensonic brush head features ADA-compliant soft bristles that are contoured to hug the natural shape of your teeth, making it easier to clean hard-to-reach areas, even back teeth. Combined with advanced sonic technology, Waterpik Sensonic removes plaque bacteria with minimal effort. Waterpik brand products are tested and trusted. For more than 60 years, Waterpik has been designing and engineering clinically proven products that deliver superior oral care and is the #1 water flosser brand recommended by dental professionals.

Pros for Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Water Pressure, Ease of use, Cleaning, Battery Life, IntensityThere were no pros for this product—Ease of use, Water Pressure, Overall Performance, Noise Level, PowerThere were no pros for this product—
Cons for Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Brush HeadThere were no cons for this product—There were no cons for this product—There were no cons for this product—

Specs

Questions & Answers
  • What is the pressure force it has?

    Hello! Unlike traditional measurements such as PSI or flow rate, our Power Flosser focuses on the principles of force and momentum, emphasizing a clean and deep clean experience. Our primary mode, Clean and Deep Clean, operates with a consistent water pressure throughout, ensuring a thorough and effective clean for your teeth.

    Answered by Answered by Philips
    Answered by Philips response
  • I would like to buy the following item: philips sonicare HX3921 (power flosser with toothbrush). Could you please tell me if the electrical socket is a european one ?

    Hello there! The Philips Sonicare Power Flosser & Toothbrush System 7000 (HX3921/40) usually comes with a universal voltage charger (100-240V). However, the plug type may vary by region.

    Answered by Answered by Philips
    Answered by Philips response
  • Can this be used by more than 1 person??

    Hello! Yes. The Philips Sonicare Power Flosser HX3921 can be used by more than one person if you purchase additional interchangeable nozzles. Each user should have their own nozzle for hygienic reasons. The flosser is designed for easy nozzle replacement, so different nozzles can be swapped as needed.

    Answered by Philips
    Philips response
  • What makes the Quad Stream Tip special?

    The Quad Stream Tip creates four streams of water to effectively clean between teeth and along the gum line.

    This question and answer was generated by AI based on customer and product data.
  • What is the reservoir capacity of this power flosser?

    The reservoir has a capacity of 20.28 ounces.

    This question and answer was generated by AI based on customer and product data.
Ask a question
No content
Sponsored